To make the granola, preheat the oven to 325°F/170°C/Gas 3. Line a large, rimmed baking sheet with parchment paper and set it aside.
Add the honey, oil, brown sugar, vanilla extract, cinnamon, and salt to a large mixing bowl and whisk to combine.
Add the rolled oats, pecans, and cranberries to the bowl and mix to combine.
Pour the oat mixture onto the prepared baking sheet and spread it out evenly.
Place in the oven to bake for 16 minutes. Set the granola aside to cool at room temperature before breaking it up into large chunks.
To make the gingerbread cookies, use an electric handheld or standing mixer and whisk together the two types of flour, dark brown sugar, baking soda, ginger, allspice, ground cinnamon, and salt to combine.
Add the butter to the flour mixture, and use a pastry blender/cutter to blend the mixture until combined.
Using the mixer on medium speed, add the molasses, egg, and milk to the flour and butter mixture and mix to combine. Scrape down the sides and mix until dough ball forms. Cover the bowl and place it in the refrigerator for 30 minutes.
Meanwhile, preheat the oven to 350°F/180°C/Gas 4 and line a cookie sheet with parchment paper.
Dust the work surface with flour and roll the cookie dough to about ½-inch/1cm thick.
Using a 3.5" x 2.5 rectangle cookie cutter, cut the cookies and place them on the prepared cookie sheet. Bake the cookies for 8-10 minutes.
Remove the cookies from the oven and leave them to cool for 5 minutes before transferring them to a wire rack to cool completely.
To make the chocolate coating for the cookies, melt the dark chocolate according to the package instructions, or place it into a microwaveable bowl and melt it in 30-second increments, stirring in between until fully melted.
Once the chocolate is melted, dip one side of the cookie into the chocolate and place it back on the cooling rack. Sprinkle each cookie with Christmas sprinkles immediately after coating it in chocolate. Set the cookies aside for the chocolate to harden.
To decorate the pretzels, place them on a wire rack over a parchment-lined baking sheet.
Microwave the red candy melts according to the package instructions, or place it into a microwaveable bowl and melt it in 30-second increments, stirring in between until fully melted.
Drizzle the melted red candy over the pretzels using a spoon, or transfer the melted candy to a squeeze bottle or piping bag to drizzle with.
Repeat steps 16 and 17 with the green candy melts. Set the pretzels aside to dry.
With all the elements prepared and set, add the granola, pretzels, and M&M's to a large bowl and toss to combine. Add the cookies when serving.
Optional: Transfer servings to food boxes or cellophane bags to give as gifts. Enjoy and Happy Holidays!